Journal
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
Volume 838, Issue 2, Pages 96-106Publisher
ELSEVIER
DOI: 10.1016/j.jchromb.2006.04.019
Keywords
liquid chromatography; electrospray ionization; tandem mass spectrometry; herbicides; phenylurea; triazine; transformation products; oysters; validation
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A method was developed for the determination of several phenylurea and triazine herbicides and their transformation products in oysters at the low mu g/kg level. Pressurised liquid extraction (PLE) of lyophilisated samples had required successive SPE combined with a liquid/liquid extraction to provide relatively clean extracts for the determination in LC-MS/MS. This procedure was validated according to the 2002/657/EC analytical decision. Efficiency of the analytical method led to confirmatory CC alpha. values ranging from 0.1 to 14 mu g/kg with an R.S.D. value ranging from 14% to 66% and a recovery yield ranging from 32% to 46% for phenylureas and from 29% to 75% for triazines. (c) 2006 Elsevier B.V. All rights reserved.
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